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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 114 days






2. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






3. Male on one pin and female on other side






4. Failure to have both testis (gonads) descend






5. 283 days






6. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






7. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






8. Duct through penis that carries sperm and urine






9. Produce testosterone. located between the seminiferous tubules






10. Actual heat cycle (period)






11. Start of the reproductive tract for the female. located outside of the body






12. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






13. Days which have decreasing daylight hours

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14. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






15. ~305 days (altough often longer due to breeding difficulties)






16. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






17. To remove/separate testicles from animal's body before animal reaches puberty






18. Sperm production






19. When are dairy cattle dehorned?






20. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






21. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






22. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






23. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






24. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






25. Important 'landmark' during palpation






26. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






27. 336 days






28. 19-23 (21) days






29. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






30. Implies the amount of estrogen production






31. 30-38 hours after estrus cycle begins






32. 24 hours before end of estrus cycle






33. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






34. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






35. 147 days






36. Days which have increasing daylight hours

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37. The more stressed out the male is - the less sperm he is going to produce






38. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






39. Way to know everything is alright with the breeding male






40. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






41. FEED






42. 14-19 (17) days






43. Days which have increasing daylight hours

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44. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






45. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






46. Failure to have both testis (gonads) descend






47. Implies the amount of estrogen production






48. 14-19 (17) days






49. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






50. Depository for semen during insemination. where urine leaves the body